Determine the friction force between the block and the surface after P was gradually increased from 0 to 80 N. In which phase will the block be classified (Phase 1 -no motion, Phase 2-impending motion, or Phase 3-in motion)? P W = 200 N OF = 64 N, Phase #1 F = 64 N, Phase #2 OF 50 N, Phase #2 F 50 N, Phase #1 Mg = 0.3 Mk = 0.2
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